JPS60194299A - Generator for lift of underwater sailing body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lift generating device for an underwater vehicle that generates lift according to the cruising speed using movable wings.

In recent years, underwater vehicles have tended to increase in speed, and as a result of this, the weight of the propulsion system has increased, and the overall weight of the underwater vehicle has also tended to increase (increase in specific gravity).

In order to maintain stable sailing against this increase in specific gravity, conventionally, the first
As shown in the figure, the underwater vehicle 1 itself has an angle of attack α with respect to the flow, and has a navigation system that generates a lift force that compensates for the negative buoyancy W due to the weight of the underwater vehicle 1.

However, such conventional navigation systems have the following drawbacks.

(1) Since the underwater vehicle 1 itself has an angle of attack a, the running resistance increases and the running speed decreases.

(2) In order to balance the moment (moment) Mb around the center of gravity 6 generated by the underwater vehicle 1 itself having an angle of attack a, the rudder angle θ is taken at the rudder 2, and the moment M around the center of gravity of this same magnitude is It is necessary to generate a moment M around 6, and by this rudder angle θ of the rudder 2, the underwater vehicle 1
The turning performance of the vehicle decreases, and the navigation resistance increases.

(3) Since the underwater vehicle 1 itself has an angle of attack α, cavitation occurs and flow noise increases.

The present invention aims to solve these problems by generating lift and carrying a negative load without the underwater vehicle itself having an angle of attack and without impairing the motion performance of the underwater vehicle. An object of the present invention is to provide a lift generating device for an underwater vehicle capable of supplementing buoyancy.

For this reason, the lift generating device for an underwater vehicle of the present invention is provided with movable wings on both sides near the center of gravity of the underwater vehicle, and a servo motor that can move the movable wings in and out of the underwater vehicle. In order to adjust the lift of the movable wings according to the traveling speed of the underwater vehicle, a speed sensor detects the traveling speed of the underwater vehicle, and the The present invention is characterized by being provided with a controller that calculates a required amount of protrusion of the movable blade and sends a control signal to the servo motor.

Hereinafter, a lift generating device for an underwater vehicle as an embodiment of the present invention will be explained with reference to the drawings. FIG. 2 is a plan view of an underwater vehicle equipped with this device, and FIG. −■
4 is a block diagram of the present device, and FIG. 5 is a side view of the underwater vehicle for explaining the operation of the present device.

As shown in FIGS. 2 and 3, movable wings 3 are provided on both sides near the center of gravity of the underwater vehicle 1, and the movable wings 3 are connected to a servo motor 4 via a shaft 4a. It is rotationally driven around a shaft 4a by a servo motor 4, and can be moved in and out of the underwater vehicle 1 in the horizontal direction.

In addition, the movable wing 3 is designed to generate upward lifting force.
A positive angle of attack is given to the body axis of the underwater vehicle 1.

As shown in FIG. 4, a speed sensor 5 detects the cruising speed of the underwater vehicle 1 in order to adjust the lift generated by the movable wings 3 according to the cruising speed of the underwater vehicle 1. is provided, and based on the detection signal from this speed sensor 5,
As shown in FIG. 5, the movable wing 3
A controller 6 is provided which calculates the required amount of protrusion and sends a control signal to the servo motor 4.

Since the lift generating device for an underwater vehicle according to the present invention is configured as described above, the speed sensor 5. By means of the controller 6 and the servo motor 4, the movable wing 3 is housed inside the underwater vehicle 1 as shown by the broken line in FIG. 2 when not cruising, and is housed inside the underwater vehicle 1 as shown by the solid line in FIG. 2 when cruising at low speed. While it is fully extended as shown in Fig. 5, during high-speed cruising, only a portion is extended as shown by the chain line in Fig. 2, and even if the cruising speed of the underwater vehicle 1 changes, as shown in Fig. 5. Thus, a lift force equal to the negative buoyancy force W is always generated on the movable wing 3.

In addition, as shown in FIG. 5, the lift force generated by the movable wing 3 is located near the center of gravity G of the underwater vehicle 1, so this lift force no longer generates a moment around the center of gravity 0, and the rudder 2 There is no need to take corners to eliminate moments.

As described in detail above, according to the lift generating device for an underwater vehicle of the present invention, movable wings are provided on both sides of the underwater vehicle near the center of gravity, and the movable wings are attached to the underwater vehicle. a speed sensor that detects the cruising speed of the underwater vehicle in order to adjust the lift force of the movable wings according to the cruising speed of the underwater vehicle; With a simple configuration including a controller that calculates the required amount of protrusion of the movable blade based on the detection signal from the speed sensor and sends a control signal to the servo motor, the following effects and advantages can be obtained.

(1) Since there is no need to give an angle of attack to the underwater vehicle itself, navigation resistance can be reduced, cavitation generation is reduced, and flow noise is reduced.

(2) Since there is no need to give a rudder angle to the rudder, the motion performance (particularly turning performance) of the underwater vehicle is not impaired.

[Brief Description of the Drawings] Fig. 1 is a side view showing a navigation system for a conventional underwater vehicle, and Figs. 2 to 5 are lift generating devices for an underwater vehicle as an embodiment of the present invention. Figure 2 is a plan view of an underwater vehicle equipped with this device, and Figure 3 is the
-■ Arrow cross-sectional view, Figure 4 is a block diagram of this device, 1
FIG. 5 is a side view of the underwater vehicle for explaining the operation of the present device. 1. Underwater vehicle, 2. Rudder, 3. Movable wing, 4. Servo motor, 4a. Axis, 5. Speed sensor, 6. Controller. Sub-Agent Patent Attorney Yoshihiko Iinuma Figure 1 Figure 5 Figure 4 L J

Claims (1)

[Claims] A movable wing is provided on each side of the underwater vehicle near the center of gravity, and a servo motor is provided to move the movable wing in and out of the underwater vehicle, and the movable wing is provided with a servo motor that can move the movable wing in and out of the underwater vehicle. a speed sensor that detects the traveling speed of the underwater vehicle in order to adjust the lift force caused by the movable wing;
A lift generating device for an underwater vehicle, characterized in that a controller is provided that calculates a required amount of protrusion of the movable wing based on a detection signal from a speed sensor and sends a control signal to the servo motor.